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(11)

EP 3 990 395 A1

(12)

(43) Date of publication: 04.05.2022 Bulletin 2022/18 (21) Application number: 20742463.1 (22) Date of filing: 19.05.2020

(51) International Patent Classification (IPC):  C02F 1/30(2006.01) H02S 40/00(2014.01) H01G 9/20(2006.01) C02F 1/72(2006.01) (52) Cooperative Patent Classification (CPC): H01G 9/2027; C25B 1/04; C02F 1/4672; C02F 1/46109; C02F 2001/46133; C02F 2201/009; C02F 2101/30; C02F 2305/10; C25B 9/00; H02S 40/00; C25B 9/66; C25B 1/55; C25B 9/70; C25B 11/077; C25B 11/057; Y02W 10/37; Y02A 20/212; Y02E 10/542; Y02E 60/36; Y02P 20/133; Y02P 70/50 (86) International application number: PCT/IB2020/054725 (87) International publication number: WO 2020/260971 (30.12.2020 Gazette 2020/53)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 26.06.2019 IT 201900010164 (71) Applicant: Università Degli Studi Di Ferrara 44121 Ferrara (IT)	(72) Inventors: VINCENZI, Donato 44121 Ferrara (IT) BOSCHETTI, Micol 44124 Ferrara (IT) BERNARDONI, Paolo 44123 Ferrara (IT) BIGNOZZI, Carlo Alberto 44124 Ferrara (IT) CARAMORI, Stefano 44049 Vigarano Mainarda, Ferrara (IT) CRISTINO, Vito 44121 Ferrara (IT) PASTI, Luisa 44123 Ferrara (IT) (74) Representative: Long, Giorgio  Jacobacci & Partners S.p.A. Via Senato, 8 20121 Milano 20121 Milano (IT)